Size - Diameter: 70mm, width: 24mm, bearing bore diameter: 8mm. Compatible with most inline skates, casterboards, and skateboards. Please verify compatibility with your inline skates before purchasing. High-quality Material - These inline skate wheels are made of high-elasticity, wear-resistant PU material, offering improved shock absorption and reduced risk of cracking. Provides excellent grip for safer skating without slipping. Applications - Ideal for beginners, these wheels deliver a smooth and stable ride both indoors and outdoors. Suitable for daily practice, recreational skating, skating competitions, and artistic skating. Package Includes - 8 inline skate wheels, sufficient for one pair of roller skates. Meets standard replacement needs. High-tech elastic material ensures smooth, quiet movement. Well-suited for indoor use, daily training, and casual skating. Convenient and practical for regular use. Color: Black Material: PU + Metal Package Contents: 8 x Inline Skate Wheels Note: The package includes only the items listed above; other products are not included. Note: Lighting and monitor settings may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.